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Showing posts from December, 2013

10 Windows 7 commands that every administrator should know....

PC troubleshooting is becoming less common in larger organizations, but consultants and techs in smaller shops still have to get their hands dirty identifying and fixing desktop problems. Oftentimes, troubleshooting Windows 7 means delving into the command line. Here are 10 fundamental Windows 7 commands you might find helpful. Before I begin... This article is intended solely as an introduction to some useful troubleshooting commands. Many of them offer numerous optional switches, which I won't cover here due to space limitations. 1: System File Checker Malicious software will often attempt to replace core system files with modified versions in an effort to take control of the system. The System File Checker can be used to verify the integrity of the Windows system files. If any of the files are found to be missing or corrupt, they will be replaced. You can run the System File Checker by using this command: sfc /scannow 2: File Signature Verification One way to verify the integri…

Wi-Fi replaced by Li-Fi in China?

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Chinese scientists have successfully developed a new cheaper way of getting connected to internet by using signals sent through light bulbs instead of radio frequencies as in 'Wi-Fi', a move expected to radically change process of online connectivity. 

Four computers can be connected to internet through one- watt LED bulb using light as a carrier instead of traditional radio frequencies, as in Wi-Fi, said Chi Nan, an information technology professor with Shanghai's Fudan University. Under the new discovery dubbed as 'Li-Fi', a light bulb with embedded microchips can produce data rates as fast as 150 megabits per second, which is speedier than the average broadband connection in China, said Chi, who leads a Li-Fi research team including scientists from the Shanghai Institute of Technical Physics of the Chinese Academy of Sciences.

 Four computers can be connected to internet through one- watt LED bulb using light as a carrier instead of traditional radio frequencies. …